99 lines
3.8 KiB
C
99 lines
3.8 KiB
C
/* stabs.h a.out stabs */
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/* (c) 2015 Frank Wille */
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#ifndef STABS_H
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#define STABS_H
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/* stab definition node, created by .stab* directives */
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struct stabdef {
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struct stabdef *next;
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union {
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char *ptr;
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int32_t idx;
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} name;
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int type;
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int other;
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int desc;
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symbol *base;
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taddr value;
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};
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extern struct stabdef *first_nlist,*last_nlist;
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/* Symbol table entry format */
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struct nlist32 {
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int32_t n_strx; /* string table offset */
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uint8_t n_type; /* type defines */
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int8_t n_other; /* spare */
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int16_t n_desc; /* used by stab entries */
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uint32_t n_value; /* address/value of the symbol */
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};
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#define N_EXT 0x01 /* external (global) bit, OR'ed in */
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#define N_TYPE 0x1e /* mask for all the type bits */
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#define N_STAB 0x0e0 /* mask for debugger symbols */
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/* symbol types */
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#define N_UNDF 0x00 /* undefined */
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#define N_ABS 0x02 /* absolute address */
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#define N_TEXT 0x04 /* text segment */
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#define N_DATA 0x06 /* data segment */
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#define N_BSS 0x08 /* bss segment */
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#define N_INDR 0x0a /* alias definition */
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#define N_SIZE 0x0c /* pseudo type, defines a symbol's size */
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#define N_WEAKU 0x0d /* GNU: Weak undefined symbol */
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#define N_WEAKA 0x0e /* GNU: Weak absolute symbol */
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#define N_WEAKT 0x0f /* GNU: Weak text symbol */
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#define N_WEAKD 0x10 /* GNU: Weak data symbol */
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#define N_WEAKB 0x11 /* GNU: Weak bss symbol */
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#define N_COMM 0x12 /* common reference */
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#define N_SETA 0x14 /* absolute set element symbol */
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#define N_SETT 0x16 /* text set element symbol */
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#define N_SETD 0x18 /* data set element symbol */
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#define N_SETB 0x1a /* bss set element symbol */
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#define N_SETV 0x1c /* set vector symbol */
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#define N_FN 0x1e /* file name (N_EXT on) */
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#define N_WARN 0x1e /* warning message (N_EXT off) */
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/* debugging symbols */
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#define N_GSYM 0x20 /* global symbol */
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#define N_FNAME 0x22 /* F77 function name */
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#define N_FUN 0x24 /* procedure name */
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#define N_STSYM 0x26 /* data segment variable */
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#define N_LCSYM 0x28 /* bss segment variable */
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#define N_MAIN 0x2a /* main function name */
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#define N_PC 0x30 /* global Pascal symbol */
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#define N_RSYM 0x40 /* register variable */
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#define N_SLINE 0x44 /* text segment line number */
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#define N_DSLINE 0x46 /* data segment line number */
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#define N_BSLINE 0x48 /* bss segment line number */
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#define N_SSYM 0x60 /* structure/union element */
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#define N_SO 0x64 /* main source file name */
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#define N_LSYM 0x80 /* stack variable */
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#define N_BINCL 0x82 /* include file beginning */
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#define N_SOL 0x84 /* included source file name */
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#define N_PSYM 0xa0 /* parameter variable */
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#define N_EINCL 0xa2 /* include file end */
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#define N_ENTRY 0xa4 /* alternate entry point */
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#define N_LBRAC 0xc0 /* left bracket */
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#define N_EXCL 0xc2 /* deleted include file */
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#define N_RBRAC 0xe0 /* right bracket */
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#define N_BCOMM 0xe2 /* begin common */
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#define N_ECOMM 0xe4 /* end common */
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#define N_ECOML 0xe8 /* end common (local name) */
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#define N_LENG 0xfe /* length of preceding entry */
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/* n_other & 0x0f */
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#define AUX_UNKNOWN 0
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#define AUX_OBJECT 1
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#define AUX_FUNC 2
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#define AUX_LABEL 3
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#define AUX_IGNORE 0xff /* vlink-specific, used to ignore this symbol */
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/* n_other & 0xf0 >> 4 */
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#define BIND_LOCAL 0 /* not used? */
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#define BIND_GLOBAL 1 /* not used? */
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#define BIND_WEAK 2
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#endif /* STABS_H */
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